Page 18 - Green Builder Magazine Nov-Dec 2019 Issue

SOURCE: PAT CYMBALA

Hurricane armor. ICFs have done remarkably well in major hurricanes, and insurers are beginning to
take notice. Some companies now offer ICF homeowners insurance discounts.

ICFs are also appealing because of their
ICF Cost Variables extreme resilience in hurricane and ood
events.
The only caveat with ICFs is that detail-
$5 ing involves many additional components.
$4 For example, nishing doors and windows,
sealing penetrations, bracing for the pour
$3
and so on add time and expense.
$2 Here’s what one experienced builder
$1 noted as “extras” associated with an ICF
project:
$0
Rented or site-built bracing
($1) Low Average High Foam gun and a lot of cans of foam to
ll voids
Wall construction Material for door and window framing
Heating/cooling equipment Clips to keep ICFs from oating
Net cost Wire ties in the corners
Sill material at the top of the wall, and
HVAC dividend. One way ICFs save on overall fasteners such as J-bolts to secure it
construction costs is by reducing the need for Ledger system for the oor(s) and related
larger-capacity heating and cooling equipment. hardware CREDIT: GERENME¡ISTOCK

16 GREEN BUILDER November/December 2019

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